I hear you! I'm pretty certain most everyone that is thinking about having this surgery and those have have, have all the same fears, thoughts, concerns, etc. I know I did. I had tried every diet possible and would lose weight but it always came back. I was on anti-depressants for the past 3-4 years. Once I got sleeved, I realized that felt like I had been in hibernation for the past 3-4-5 years and I suddenly woke up and wanted to really live life! The sleeve changes your life. It is not an easy surgery. It is major surgery. When you are going through it, it is so real and pain is real. But, it passes and each day gets better. I was sleeved on 1/17/12. It is the best decision I've ever made and I am so happy I did it. I've blogged about my experience a bit, so feel free to check out my blog.
I hope for you the best and peace of mind. I agree with LilMssDiva, venting and asking questions on this site does help a lot! We are all here to help and have this one thing in common, but as you will find, lots of things in common.